One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,8)(5,14)(6,11)(7,12)(10,15)(13,16)(19,20)(23,24)(27,28)(30,31)(33,34)(35,41)(36,39)(37,40)(38,43)(42,47)(44,46)(45,48) involution — undirected(1,3,7,4)(2,8,12,9)(5,11,15,13)(6,14,16,10)(17,18,22,26)(19,23,20,24)(21,25,29,32)(27,30,28,31)(33,34,37,40)(35,38,43,41)(36,39,44,46)(42,45,48,47)(1,3,7,4)(2,9,12,8)(5,13,15,11)(6,14,16,10)(17,19,22,20)(18,23,26,24)(21,27,29,28)(25,30,32,31)(33,34)(35,38)(36,39)(37,40)(41,43)(42,45)(44,46)(47,48)(1,4,7,3)(2,9,12,8)(5,11,15,13)(6,14,16,10)(17,18)(19,23)(20,24)(21,25)(22,26)(27,30)(28,31)(29,32)(33,35)(34,38)(36,42)(37,43)(39,45)(40,41)(44,48)(46,47)(1,5)(2,10)(3,13)(4,11)(6,9)(7,15)(8,16)(12,14)(17,20,22,19)(18,24,26,23)(21,28,29,27)(25,31,32,30)(1,6)(2,11)(3,14)(4,10)(5,9)(7,16)(8,15)(12,13)(17,21,22,29)(18,25,26,32)(19,27,20,28)(23,30,24,31)(33,36,37,44)(34,39,40,46)(35,42,43,48)(38,45,41,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.